css << ".hide_if_user_#{@user.id} { display: none !important }" if @user;
css << ".show_if_user_#{@user.id} { display: inline !important }" if @user;
css << ".hide_unless_administrator { display: none !important }" unless @user and @user.administrator?;
+ css << ".hide_unless_moderator { display: none !important }" unless @user and @user.moderator?;
return content_tag(:style, css, :type => "text/css")
end